feat(Core/Hooks): added collection of hooks to extends AC (#3047)

This collection of hooks comes from the Maelstrom project. It allows to release modules such as :
- 3v3-soloqueue
- 1v1 arena
- pvestats

and many others

src/server/game/DungeonFinding/LFGMgr.cpp

@@ -456,7 +456,7 @@ namespace lfg
                 }
             }
 
-            sScriptMgr->OnInitializeLockedDungeons(player, level, lockData);
+            sScriptMgr->OnInitializeLockedDungeons(player, level, lockData, dungeon);
 
             /* TODO VoA closed if WG is not under team control (LFG_LOCKSTATUS_RAID_LOCKED)
                 lockData = LFG_LOCKSTATUS_TOO_LOW_GEAR_SCORE;
@@ -500,6 +500,9 @@ namespace lfg
         if (grp && (grp->isBGGroup() || grp->isBFGroup()))
             return;
 
+        if (!sScriptMgr->CanJoinLfg(player, roles, dungeons, comment))
+            return;
+
         // pussywizard: can't join LFG/LFR while using LFR
         if (GetState(player->GetGUID()) == LFG_STATE_RAIDBROWSER)
         {